#include<iostream>
#include<set>
using namespace std;

void printSet(const set<int>& s){
	for(set<int>::const_iterator it=s.begin();it!=s.end();it++){
		cout<<*it<<" ";
	}
	cout<<endl;
}


int main(){
	set<int> s={9,8,5,2,1,1};
	cout<<"s: ";
	printSet(s);


	set<int> s1;
	s1=s;
	cout<<"s1: ";
	printSet(s1);

	set<int> s2;
	s2={3,4,5};
	cout<<"s2: ";
	printSet(s2);



	return 0;
}
